CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated March 10, 2008, relating to the consolidated financial statements and financial statement schedule of Clean Harbors, Inc. and subsidiaries (the "Company") (which report expresses an unqualified opinion and includes an explanatory paragraph regarding the adoption of FASB Interpretation No. 48,Accounting for Uncertainty in Income Taxes, effective January 1, 2007 and Statement of Financial Accounting Standards No. 123(R),Share-Based Payment, effective January 1, 2006) and our report dated March 10, 2008 relating to internal control over financial reporting (which report expresses an adverse opinion on the effectiveness of the Company's internal control over financial reporting because of a material weakness), appearing in the Annual Report on Form 10-K of Clean Harbors, Inc. for the year ended December 31, 2007, and to the reference to us under the heading "Experts" in the Prospectus, which is part of this Registration Statement.
/s/ DELOITTE & TOUCHE LLP
Boston, Massachusetts
April 16, 2008
